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ONCOGENE TRANSCRIPTION CONTROL REGION

外国特許コード F190009780
整理番号 (S2017-0795-N0)
掲載日 2019年5月7日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP023028
国際公開番号 WO 2018230731
国際出願日 平成30年6月15日(2018.6.15)
国際公開日 平成30年12月20日(2018.12.20)
優先権データ
  • 特願2017-119159 (2017.6.16) JP
発明の名称 (英語) ONCOGENE TRANSCRIPTION CONTROL REGION
発明の概要(英語) The present invention provides an antitumor agent containing a substance that specifically recognizes a target region of 12 or more consecutive nucleotides including at least part of the Runx binding sequence TGCGGT nearest the transcription initiation site upstream of the transcription initiation site of a c-Myc gene and inhibits the binding of Runx3 to the Runx binding sequence.
従来技術、競合技術の概要(英語) BACKGROUND ART
Cancer cells are a variety of genetic abnormalities accumulate, over time, been increasing in their complexity. To be opposed thereto, a wide variety of molecular target drugs (anti-cancer agents) are developed, their complexity has not been overcome.
Anti-cancer agents include, the target cell division in addition to the conventional anti-cancer agents, cancer specific variation of the target molecules such as antibodies to the target agent and anti-PD-1, immune to attack cancer immune mechanisms to adjust the immunotherapeutic agent and the like. However, conventional anti-cancer agent is a normal cell is also susceptible to the influence of, the target agent is very effective by the target molecules may be on the other hand, not be very effective, immunotherapy agents, patients undergoing treatment, the effect of problems such as a person is limited.
Accumulate mutations in a cell, in most cases, the mutant is repaired, apoptosis or cell death is due to the attack, and the accumulation of mutations 3-10, and are referred to as cancer. Is one of the mutation, and factors of the common-occurring variant, the molecular basis of a common complex malignant tumor exists. For example, in human cancer, c-Myc and deactivation of the p53 expression of the most widely recognized by an increase. p53 Is the best known are considered to influence the 'tumor suppressor gene' in. Is the primary role of the p53, checks the abnormality in the cell, if there is a problem of inducing apoptosis in. Is p53, 50%-80% of the mutation in all tumor extent (dysfunction, reduction in the amount of expression) are known. In addition, the degree of malignancy, anti-cancer drugs are considered to be correlated with resistance.
p53 For a molecule and its vicinity is very anti-cancer agent in a number of ways are developed, to date have not been successful. Normal p53 is increased and that it is technically difficult and, when the increased amount or more so as to induce apoptosis, normal cells and over-expression will also induce apoptosis (i.e., 'the normal quantity' is difficult to be adjusted). Therefore, the upstream p53, downstream of one or more anti-cancer agent and the target is in development, have not been successful either.
C-Myc is, the proliferation of cells having a role in regulating the protein. C-Myc and knock-down, in preparation for the growth does not occur, the cell cycle is stopped. Apoptosis, proliferation induced at the moment is most likely, the cell cycle and apoptosis is stopped and resistance. Thus, c-Myc also, direct drug discovery target is difficult.
Runx Runt stored in the evolutionary family has a domain, the domain via the coupling to the transcriptional regulatory region of the target gene. Runx family is also, a variety of C-C to interact with a transcription factor (cofactor) and forming a heterodimer, downstream target genes that control the transfer of the group (non-patent document 1) has. Runx1 mammalian Runx family, Runx2 Runx3 and is constructed, these abnormalities can result in a variety of closely related to the disease. For example, the Runx1 of chromosomal translocations in acute myeloid leukemia and a target, by the chromosome instability of the Runx2 (LOH) is the loss of one allele, and the cause of abnormal skull bones are. On the other hand, in the tumor suppressor gene Runx3 of stomach cancer is pointed out that the (non-patent document 2). Further, within the nucleus coupled Runx3 p53, a positive transfer of the target gene group of the p53 control has been suggested (Non-Patent Document 2). In addition, the mouse is knocked down Runx3 is fatal, the mice by half the amount of expression of the life is short, is a function essential to the survival of Runx3 considered, as the target of the anti-cancer agent seems to be unsuitable.
C-Myc transcription of the gene is upstream from the start, a large number of Runx binding sequence is present (ACCACA, TGCGGT), endogenous Runx1 Runx thereof is coupled to the binding sequence, through the interaction of the co-expression of the gene c-Myc be suppressed have been reported (Non-Patent Document 1).
As described above, in many cancers, and p53 c-Myc inactivation of elevated expression of the found common. In addition, a family of Runx, c-Myc and p53 can interact with both the factor has been suggested. However, these factors, the anti-cancer agent is a direct target of drug discovery is considered to be difficult.
Here, human non-small cell lung cancer cell line A549 and cell injection mice NOG, the common recognition sequence Runx1-3 TGTGGT PI polyamide target (Chb-M) was administered, to suppress the proliferation of A549 cells, so as to improve the survival rate has been reported (Non-Patent Document 3). Also, the same document describes that, although not used in the experiments, target TGCGGT piriamido PI (Chb-50) is also disclosed. However, the c-Myc gene to the transcriptional regulatory region, there are a large number of Runx binding sequence, on which part of the recognition sequence are important for Runx is not known. Also, Runx1, Runx2 Runx3 or knock out mice because both embryonic lethal, the target binding sequence number of the above PI Runx piriamido is, a very strong side effects can be expected.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NAGASAKI UNIVERSITY
  • 発明者(英語)
  • ITO, Kosei
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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